I have been wanting to get an air purifier for awhile now, and this one fits the bill.  It is quiet and sits perfectly on a side table.  I would suggest using this somewhere other than the bedroom though.  The circle, whether it is blue or red, is really bright at night! I guess that's how you know it's working though.  It seems to do a pretty good job at cleaning the air.  I also wish it would have come with better instructions.